ENH: add a guard to ensure config.h is never included directly.

(cherry picked from commit 1c52adb271bd4b5fecb17a1e4c4e8e7e4667b8ba)
numpy · Nov 27, 2009 · abd0408 · abd0408
1 parent 65880fd
commit abd0408
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diff --git a/numpy/core/SConscript b/numpy/core/SConscript
@@ -316,6 +316,12 @@ if config.CheckCBLAS():
 else:
     build_blasdot = 0
 
+config.config_h_text += """
+#ifndef _NPY_NPY_CONFIG_H_
+#error config.h should never be included directly, include npy_config.h instead
+#endif
+"""
+
 config.Finish()
 write_info(env)
 

diff --git a/numpy/core/setup.py b/numpy/core/setup.py
@@ -435,6 +435,14 @@ def generate_config_h(ext, build_dir):
                 target_f.write('#define inline %s\n' % inline)
             target_f.write('#endif\n')
 
+            # add the guard to make sure config.h is never included directly,
+            # but always through npy_config.h
+            target_f.write("""
+#ifndef _NPY_NPY_CONFIG_H_
+#error config.h should never be included directly, include npy_config.h instead
+#endif
+""")
+
             target_f.close()
             print 'File:',target
             target_f = open(target)